TY - JOUR AU - Omar, J; Olivares, M; Alzaga, M; Etxebarria, N TI - Optimisation and characterisation of marihuana extracts obtained by supercritical fluid extraction and focused ultrasound extraction and retention time locking GC-MS JO - J Sep Sci VL - 36 PY - 2013 DO - 10.1002/jssc.201201103 L3 - PubMed-ID: 23505258 SP - 1397 EP - 1404 ER -